| (19) |
 |
|
(11) |
EP 0 420 240 A3 |
| (12) |
EUROPEAN PATENT APPLICATION |
| (88) |
Date of publication A3: |
|
07.04.1993 Bulletin 1993/14 |
| (43) |
Date of publication A2: |
|
03.04.1991 Bulletin 1991/14 |
| (22) |
Date of filing: 27.09.1990 |
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| (84) |
Designated Contracting States: |
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DE FR GB IT |
| (30) |
Priority: |
29.09.1989 JP 254848/89
22.08.1990 JP 220534/90
|
| (71) |
Applicant: HOYA CORPORATION |
|
Shinjuku-ku
Tokyo (JP) |
|
| (72) |
Inventors: |
|
- Yanagita, Hiroaki
Hino-shi,
Tokyo (JP)
- Okada, Keiko
Akishima-shi,
Tokyo (JP)
|
| (74) |
Representative: Hansen, Bernd, Dr. Dipl.-Chem. et al |
|
Hoffmann, Eitle & Partner
Patent- und Rechtsanwälte,
Postfach 81 04 20
81904 München
81904 München (DE) |
|
| |
|
| (54) |
Halide laser glass and laser device utilizing the glass |
(57) Disclosed is halide laser glass which comprises cationic components and anionic components.
The cationic components being present within the ranges: Al ions in a range of from
20 to 45 mol%, Zr ions and/or Hf ions in a range of from 0.5 to 25 mol%, Ca ions in
a range of from 0 to 42 mol%, Sr ions in a range of from 0 to 25 mol%, Ba ions in
a range of from 0 to 25 mol% in a total amount of the first group cations within the
range of 20 to 70 mol%, Mg ions in a range of from 0 to 15 mol%, Y ions in a range
of from 0 to 20 mol%, alkali metal ions in a range of from 0 to 20 mol% in a total
amount of the second group cations within the range of 2 to 50 mol%, and Er ions in
a range of from 6 to 25 mol%, while the anionic components being present within the
ranges: F ions in a range of from 90 to 100 mol%, and Cl ions in a range of from 0
to 10 mol%. The cationic components may further contain Ho ions in a range of from
0.1 to 5 mol%.
Further disclosed is a laser device having, as a laser medium, the halide laser glass
as described above.